| latinský název | český název |
|---|---|
| Racomitrium | |
| Racopilum | |
| Raddia | |
| Raddiella | |
| Radicilingua | |
| Radiococcus | |
| Radiofilum | |
| Radiola | stozrník |
| Radula | struhatka |
| Rafinesquia | |
| Raillardella | |
| Rainiera | |
| Rajania | |
| Ramonda | kuklice |
|
| |
| Ranalisma | žabnice |
| Ranavalona | |
| Randia | pěnicovec |
| Ranunculus | pryskyřník |
| Raphanus | ředkev |
| Raphia | rafie |
| Raphidonema | |
| Raphiocarpus | |
| Rapistrum | řepovník |
| Ratibida | |
| Rauhocereus | |
| Rauiella | |
| Rauvolfia | zmijovnice |
| Ravenala | ravenala |
|
| |
| Ravenea | |
| Ravenia | |
| Rayjacksonia | |
| Reboulia | koženka |
| Rebutia | rebucie |
| Rectolejeunea | |
| Redfieldia | |
| Regmatodon | |
| Regnellidium | |
| Rehia | |
| Reichardia | |
| Reimarochloa | |
| Reinboldia | |
| Reitzia | |
|
| |
| Reldia | |
| Relchela | |
| Remirea | |
| Remya | |
| Renanthera | |
| Renealmia | |
| Renvoizea | |
| Reseda | rýt |
| Resia | |
| Restrepiella | |
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